人们一直以来采取的保护蜂鸟栖息地的具体措施之一是清理受到污染的栖息地，然后重栽蜂鸟赖以生存的花草。
One of the concrete ways people have been doing this is by cleaning up polluted habitat areas and then replanting native flowers that humming birds feed on.
人们一直以来采取的保护蜂鸟栖息地的具体措施之一是清理受到污染的栖息地，然后重栽蜂鸟赖以生存的花草。
One of the concrete ways people have been doing this is by cleaning up polluted habitat areas and then replanting native flowers that humming birds feed on.
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